Combination initiation network structure combining delay detonator cluster connection and hole-by-hole initiation

Abstract

The invention discloses a combination initiation network structure combining delay detonator cluster connection and hole-by-hole initiation. The combination initiation network structure is characterized in that five rows of blast holes which are arranged in parallel are arranged, adjacent two rows of blast holes are staggered to form plum blossom shapes, and each blast hole is internally providedwith a high-section type delay nonel tube detonator; and the high-section type delay nonel tube detonators in the first row of blast holes, the second row of blast holes and the third row of blast holes are connected into a plurality of cluster connection units in a cluster connection mode, and the plurality of cluster connection units are connected in series through first low-section type delay nonel tube detonators to form a cluster connection nonel tube detonation circuit. Through years of practice and exploration, in mine blasting operation of joint or bedding development, the combinationinitiation network structure combining common nonel tube millisecond delay detonator cluster connection and hole-by-hole initiation is adopted, the leakage of blasting gas energy is effectively avoided, the work efficiency of explosive blasting gas is ensured, vibration generated by blasting is also reduced, and a protective role on surrounding buildings, structures and side slopes is realized.

Description

[0001] Technical field: [0002] The invention relates to a hybrid detonation network structure, in particular to a hybrid detonation network structure combining delayed detonator clustering and hole-by-hole detonation. [0003] Background technique: [0004] Most of the rocks in some mines are composed of schist and shale, with well-developed joints and fissures. After drilling, the holes are often connected through fissures. The reason is removed from the adjacent blast holes, causing the blasting energy to leak out and affecting the blasting effect. If volley blasting is adopted, the blasting vibration intensity is too large, which will not only affect the safety of surrounding buildings (structures), but also cause serious damage to the mine slope. In this case, how to improve the work efficiency of the explosive blasting gas and effectively reduce the blasting vibration is an urgent problem to be solved. [0005] Invention content: [0006] The purpose of the present in...

AI Technical Summary

Problems solved by technology

[0004] Most of the rocks in some mines are composed of schist and shale, with well-developed joints and fissures. After drilling, the holes are often connected through fissures. The reason is removed from the adjacent blast holes, causing the blasting energy to leak out and affecting the blasting effect

If volley blasting is adopted, the blasting vibration intensity is too large, which will not only affect the safety of surrounding buildings (structures), but also cause serious damage to the mine slope.

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